SlimBatteryMonitor is described as 'Displays a battery meter in the menu bar for laptop and UPS batteries. It uses the same information as Apple's system gauge, but allows you much more control over how the information is displayed. It can take up less space. Works with Mac OS X 10' and is an app. There are five alternatives to SlimBatteryMonitor for Mac and Homebrew. The best SlimBatteryMonitor alternative is CoconutBattery 3, which is free. Other great apps like SlimBatteryMonitor are BattOpt, Battery Indicator, Battery Health and Battery Logger.
CoconutBattery shows you live information about the battery in your Mac, iPhone, and iPad including:
Age of your devices and their batteries How often the battery was charged Your battery health
MacBook battery maintenance utility with hybrid CLI and GUI interface. Both Apple and Intel-Silicon MacBooks are supported.
Taiwan
This is especially useful on macOS Sierra 10.12.2 or later where clicking the battery icon no longer shows the remaining time.
Norway
With Battery Health, you can easily see all the important information about your MacBook's battery, such as current charge level, battery capacity, power usage, number of times it has been charged and much more.
United Kingdom
An application to count battery usage.
Application will start count whenever power cable was disconnected from notebook, and will reset the count whenever the power is connected.
Application will ignore the count during sleeping, or powered off, but still record these activitie.
